This document provides information on LSZH fire resistant cables, including their construction, applications, specifications, and technical specifications for single-core and multi-core cables ranging from 1.5 mm2 to 1000 mm2 in size. The cables have a mica tape fire barrier, XLPE or LSZH insulation and sheathing, and are designed for applications requiring circuit integrity in areas like emergency lighting, fire alarms, and high-rise buildings. Tables provide details on the conductor, insulation thickness, cable diameters and weights for various cable types.

1. 8
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LSZH Fire Resistant Cables
300/500V Single-Core ~ 4-Core
Mica Tape Fire Barrier, XLPE Insulated, LSZH Sheathed, Fire Resistant Cable
CU/MICA/XLPE/LSZH
Application : This cable is designed for areas where the integrity
of the electrical circuit is critical in maintaining power
supply. Applications can be found in emergency
lightings, control and power circuits, power
stations, fire alarm systems, underground tunnels,
communications systems, sewage treatment plants,
lifts, escalators, and high-rise buildings.
Voltage rating : 300/500V
Construction : Plain annealed copper, mica tape fire barrier, XLPE
insulated, LSZH compound sheathed cable
Insulation colour : Single-Core: (Natural)
2-Core: (Brown & Blue)
3-Core: (Brown, Black & Grey)
4-Core: (Brown, Black, Grey & Blue)
or as per order
Sheath colour : Orange or as per order
Specification : Refer IEC60502-1, BS6387, SS299-1, IEC60331,
IEC60332-1, IEC60332-3, IEC60754, IEC61034
No. of
Core
Conductor Insulation Sheath
Without Earth
Conductor
With Earth Conductor
Nominal
Area
No./Dia. of
Strand
Thickness Thickness
Approx.
Overall
Dia.
Approx.
Weight
Approx.
Overall
Dia.
Approx.
Weight
mm2
No./mm mm mm mm kg/km mm kg/km
Single-core 1.5 7/0.53 0.5 0.5 4.4 29 - -
2-core 1.5 7/0.53 0.5 0.5 7.7 70 8.2 80
3-core 1.5 7/0.53 0.5 0.5 8.7 90 10.5 100
4-core 1.5 7/0.53 0.5 0.5 10.3 105 12.2 120
Single-core 2.5 7/0.67 0.5 0.5 4.9 40 - -
2-core 2.5 7/0.67 0.5 0.5 8.8 100 9.6 120
3-core 2.5 7/0.67 0.5 0.5 9.5 125 10.7 150
4-core 2.5 7/0.67 0.5 0.5 11.0 155 13.0 190
Single-core 4 7/0.85 0.5 0.5 5.5 55 - -
2-core 4 7/0.85 0.5 0.5 9.8 140 10.5 170
3-core 4 7/0.85 0.5 0.5 11.5 180 12.5 220
4-core 4 7/0.85 0.5 0.5 12.5 255 13.5 270
For current rating and voltage drop please refer to Tables 2 & 3 (Page 50)

2. 9
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FireResistantandFlameRetardantCables
LSZH Fire Resistant Cables
450/750V & 600V/1000V Single-Core
Mica Tape Fire Barrier, LSZH Insulated, Non-Sheathed Fire Resistant Cable
CU/MICA/LSZH
Application : This cable is used in fire extinguishing systems,
sprinklers, control panels, and exit lights in high-
rise buildings, hotels, hospitals, sub-ways, and
public facilities.
Voltage rating : 450/750V & 600/1000V
Construction : Plan annealed copper, mica tape fire barrier, LSZH
compound insulated cable
Insulation colour: Orange or as per order
Specification : Refer BS7211, BS6387, SS299-1, IEC60331,
IEC60332-1, IEC60332-3, IEC60754, IEC61034
Conductor 450/750V 600/1000V
Nominal
Area
No./Dia.
Of Strand
Thickness of
Insulation
Approx.
Overall Dia.
Approx.
Weight
Thickness of
Insulation
Approx.
Overall Dia.
Approx.
Weight
mm2
No./mm mm mm kg/km mm mm kg/km
1.5 7/0.53 0.7 3.5 25 0.8 3.8 30
2.5 7/0.67 0.8 4.1 35 0.8 4.2 40
4 7/0.85 0.8 4.6 52 1.0 5.3 70
6 7/1.04 0.8 5.2 72 1.0 6.0 96
10 7/1.35 1.0 6.5 120 1.0 6.6 130
16 7/1.70 1.0 7.6 180 1.0 7.7 200
25 7/2.14 1.2 9.0 275 1.2 9.1 290
35 19/1.53 1.2 10.2 370 1.2 10.3 390
50 19/1.78 1.4 11.8 500 1.4 11.9 520
70 19/2.14 1.4 13.4 700 1.4 13.5 730
95 19/2.52 1.6 15.8 980 1.6 15.9 990
120 37/2.03 1.6 17.1 1200 1.6 17.2 1250
150 37/2.25 1.8 18.8 1500 1.8 18.9 1520
185 37/2.52 2.0 21.0 1900 2.0 21.2 1900
240 61/2.25 2.2 25.7 2500 2.2 25.8 2550
300 61/2.52 2.4 28.6 3140 2.4 28.8 3150
400 61/2.85 2.6 32.0 4000 2.6 32.2 4000
500 61/3.20 2.8 35.5 5000 2.8 35.7 5000
630 127/2.52 2.8 39.5 6300 2.8 39.7 6360
For current rating and voltage drop please refer to Tables 4 & 5 (Page 51)

3. 10
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LSZH Fire Resistant Cables
600/1000V Single-Core
Mica Tape Fire Barrier, XLPE Insulated, Unarmoured & Armoured,
LSZH Sheathed Fire Resistant Cable
CU/MICA/XLPE/LSZH or CU/MICA/XLPE/LSZH/AWA/LSZH
Application : This cable is designed for areas where the integrity
of the electrical circuit is critical in maintaining
power supply. Applications can be found in
emergency lightings, control and power circuits,
power stations, fire alarm systems, underground
tunnels, communications systems, sewage
treatment plants, lifts, escalators, and high-rise
buildings.
Voltage rating : 600/1000V
Construction : Plain annealed copper, mica tape fire barrier,
XLPE or XLEVA compound insulated, unarmoured
or aluminum wires armoured, LSZH compound
sheathed cable
Insulation colour : Natural
Sheath colour : Orange or as per order
Specification : BS6724, BS6387, SS299-1, IEC60502-1, IEC60331,
IEC60332-1, IEC60332-3, IEC60754, IEC61034
Conductor Insulation Unarmoured Cable Armoured Cable
Nominal
Area
No./Dia. Of
Strand
Dia. Of
Conductor
Thickness
Approx.
Overall Dia.
Approx.
Weight
Approx.
Overall Dia.
Approx.
Weight
mm2
No./mm mm mm mm kg/km mm kg/km
1.5 7/0.53 1.59 0.7 6.5 54 - -
2.5 7/0.67 2.01 0.7 6.8 67 - -
4 7/0.85 2.55 0.7 7.5 86 - -
6 7/1.04 3.12 0.7 8.1 110 - -
10 7/1.35 4.05 0.7 9.2 155 - -
16 7/1.70 5.10 0.7 10.2 220 - -
25 7/2.14 6.42 0.9 11.9 325 - -
35 19/1.53 7.65 0.9 13.2 425 - -
50 19/1.78 8.90 1.0 14.6 600 18.5 780
70 19/2.14 10.70 1.1 16.6 820 20.5 1010
95 19/2.52 12.60 1.1 18.7 1100 23.0 1320
120 37/2.03 14.21 1.2 20.5 1350 24.5 1610
150 37/2.25 15.75 1.4 22.7 1640 27.0 2010
185 37/2.52 17.64 1.6 25.5 2040 29.5 2440
240 61/2.25 20.25 1.7 28.5 2650 34.5 3060
300 61/2.52 22.68 1.8 31.5 3260 36.9 3690
400 61/2.85 25.65 2.0 35.4 4130 41.5 4780
500 61/3.20 28.80 2.2 39.0 5200 45.5 5970
630 127/2.52 32.76 2.4 43.5 6600 50.5 7530
800 127/2.85 37.05 2.6 48.5 8300 56.8 9680
1000 127/3.20 41.60 2.8 53.5 10000 61.5 11980
Current rating and voltage drop
For Unarmoured Cable, please refer to Tables 4 & 5 (Page 51)
For Armoured Cable, please refer to Tables 6 & 7 (Page 52)

4. 11
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LSZH Fire Resistant Cables
600/1000V 2-Core ~ 4-Core
Mica Tape Fire Barrier, XLPE Insulation, Unarmoured & Armoured,
LSZH Sheathed Fire Resistant Cable
CU/MICA/XLPE/LSZH or CU/MICA/XLPE/LSZH/SWA/LSZH
Application : This cable is designed for areas where the integrity
of the electrical circuit is critical in maintaining power
supply. Applications can be found in
emergency lightings, control and power circuits,
power stations, fire alarm systems, underground
tunnels, communications systems, sewage treatment
plants, lifts, escalators, and high-rise buildings.
Voltage rating : 600/1000V
Construction : Plain annealed copper, mica tape fire barrier, XLPE
or XLEVA compound insulated, galvanized steel
wires armoured, LSZH compound sheathed cable.
Insulation colour : 2-Core: (Brown & Blue)
3-Core: (Brown, Black & Grey)
4-Core: (Brown, Black, Grey & Blue)
5-Core & above: (Black [XLPE] / Natural [LSZH
Compound])
or as per order
Sheath colour : Orange or as per order
Specification : BS7846, BS6387, SS299, IEC60331, IEC60332-1,
IEC60332-3, IEC60754, IEC61034
2-CORE
Conductor Insulation Unarmoured Cable Armoured Cable
Nominal
Area
No./Dia. Of
Strand
Dia. Of
Conductor
Thickness
Approx.
Overall Dia.
Approx.
Weight
Approx.
Overall Dia.
Approx.
Weight
mm2
No./mm mm mm mm kg/km mm kg/km
1.5 7/0.53 1.59 0.7 12.2 150 15.3 390
2.5 7/0.67 2.01 0.7 12.6 180 16.5 450
4 7/0.85 2.55 0.7 14.7 250 17.6 525
6 7/1.04 3.12 0.7 16.2 290 18.8 620
10 7/1.35 4.05 0.7 17.1 450 21.0 800
16 7/1.70 5.10 0.7 19.2 550 23.0 1100
25 7/2.14 6.42 0.9 20.0 680 27.0 1480
35 19/1.53 7.65 0.9 22.0 940 30.0 2000
50 19/1.78 8.90 1.0 24.0 1250 33.0 2450
70 19/2.14 10.70 1.1 27.0 1700 37.0 3200
FireResistantandFlameRetardantCables
Current rating and voltage drop (cs) : Circular Stranded Conductor
For Unarmoured Cable, please refer to Tables 2 & 3 (Page 50) (s) : Circular Compacted Stranded Conductor
For Armoured Cable, please refer to Tables 8 & 9 (Page 53)

5. 12
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LSZH Fire Resistant Cables
600/1000V 2-Core ~ 4-Core
Mica Tape Fire Barrier, XLPE Insulation, Unarmoured & Armoured,
LSZH Sheathed Fire Resistant Cable
CU/MICA/XLPE/LSZH or CU/MICA/XLPE/LSZH/SWA/LSZH
3-CORE
Conductor Insulation Unarmoured Cable Armoured Cable
Nominal
Area
No./Dia. Of
Strand
Dia. Of
Conductor
Thickness
Approx.
Overall Dia.
Approx.
Weight
Approx.
Overall Dia.
Approx.
Weight
mm2
No./mm mm mm mm kg/km mm kg/km
1.5 7/0.53 1.59 0.7 12.3 170 16.5 420
2.5 7/0.67 2.01 0.7 13.8 200 17.0 500
4 7/0.85 2.55 0.7 15.2 300 18.5 600
6 7/1.04 3.12 0.7 16.8 380 19.8 785
10 7/1.35 4.05 0.7 18.0 550 22.6 1030
16 7/1.70 5.10 0.7 21.0 760 25.0 1370
25 7/2.14 6.42 0.9 22.0 960 29.0 1900
35 19/1.53 7.65 0.9 24.0 1300 32.0 2300
50 19/1.78 8.90 1.0 28.0 1700 35.0 2900
70 19/2.14 10.70 1.1 31.0 2400 40.0 4000
95 19/2.52 12.60 1.1 36.0 3250 45.0 5400
120 37/2.03 14.21 1.2 38.0 4000 49.0 6450
150 37/2.25 15.75 1.4 42.0 5000 55.0 8200
185 37/2.52 17.64 1.6 47.0 6100 60.0 9800
240 61/2.25 20.25 1.7 52.0 8000 68.0 12300
300 61/2.52 22.68 1.8 59.0 9850 74.0 14800
400 61/2.85 25.65 2.0 63.0 13000 83.0 17600
4-CORE
Conductor Insulation Unarmoured Cable Armoured Cable
Nominal
Area
No./Dia. Of
Strand
Dia. Of
Conductor
Thickness
Approx.
Overall Dia.
Approx.
Weight
Approx.
Overall Dia.
Approx.
Weight
mm2
No./mm mm mm mm kg/km mm kg/km
1.5 7/0.53 1.59 0.7 14.3 210 16.0 475
2.5 7/0.67 2.01 0.7 15.2 270 17.8 570
4 7/0.85 2.55 0.7 17.2 380 19.8 690
6 7/1.04 3.12 0.7 19.0 440 21.0 940
10 7/1.35 4.05 0.7 20.6 670 23.3 1200
16 7/1.70 5.10 0.7 23.6 820 26.5 1400
25 7/2.14 6.42 0.9 26.0 1320 30.5 2400
35 19/1.53 7.65 0.9 29.0 1730 34.0 2800
50 19/1.78 8.90 1.0 32.0 2300 38.0 3500
70 19/2.14 10.70 1.1 38.0 3180 44.0 5300
95 19/2.52 12.60 1.1 41.9 4370 48.5 6700
120 37/2.03 14.21 1.2 44.0 5400 54.0 8500
150 37/2.25 15.75 1.4 50.8 6500 59.0 10000
185 37/2.52 17.64 1.6 55.0 8200 64.5 12200
240 61/2.25 20.25 1.7 60.5 10600 74.0 15400
300 61/2.52 22.68 1.8 68.5 13200 82.0 19500
400 61/2.85 25.65 2.0 76.0 17000 92.0 25500
Current rating and voltage drop (cs) : Circular Stranded Conductor
For Unarmoured Cable, please refer to Tables 2 & 3 (Page 50) (s) : Circular Compacted Stranded Conductor
For Armoured Cable, please refer to Tables 8 & 9 (Page 53)